Paper Title:
Sulphur Removal from Sulphur Containing Phase(CaS) in Ladle Slag by Oxidizing Roasting
  Abstract

Slag is the main by-product of iron and steelmaking process. Ladle slag, melted fully after secondary refining, usually contains rich CaO, Al2O3 and 2CaO·SiO2 phase, which has a potential value to recycle into steelmaking process as the substitution of lime. However, reuse of ladle slag is easy to induce an accumulation effect of sulphur or phosphorus. In this present work, CaS powder was used to replace the sulphur containing phase in ladle slag to investigate the roasting process under different atmosphere conditions. The influence of temperature and oxygen pressure on sulphur removal mechanism and products composition has been discussed. By adding solid sulfur into molten ladle slag, the results of SEM has showed that sulphur element in ladle slag existed as independent CaS phase. Roasting experiments showed that lower oxygen pressure and higher reaction temperature were beneficial for CaS changing into CaO, it was very important to design the optimum roasting route for sulphur removal from the ladle slag.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
1080-1084
DOI
10.4028/www.scientific.net/AMR.233-235.1080
Citation
D. Y. Wang, W. Z. Lao, H. D. Feng, X. Li, M. F. Jiang, Y. L. Wu, Y. C. Zhang, "Sulphur Removal from Sulphur Containing Phase(CaS) in Ladle Slag by Oxidizing Roasting", Advanced Materials Research, Vols. 233-235, pp. 1080-1084, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Qiang Li, Xin Hua Wang, Hai Bo Li
Iron and Steel
Abstract:For high grade pipeline steel, elimination of Al2O3 inclusions can improve the susceptibility of hydrogen-induced...
1143
Authors: Zai Bo Li, San Yin Zhao, Xu Guang Zhao, Tu Sheng He
Building Materials
Abstract:To realize the industrial application of online reconstruction technique of steel slag, a pilot-scale reconstruction research of steel slag...
906
Authors: Min Zhang, Jian Hua Zeng, Hong Pan
Chapter 6: Inorganic and Organic Chemical Engineering
Abstract:In order to meet the requirement of industrial production of cleanliness steel, studies on desulphurization, deoxidization and inclusion...
1194
Authors: Ding Guo Zhao, Shu Huan Wang, Ming Jian Guo
Chapter 4: Material Engineering and its Application Technology
Abstract:The sample of oxide inclusion was obtained in the different stage of steelmaking for the 65 steel. The microstructure was observed by using...
324
Authors: Yong Chen, Xin Teng Liang, Jian Hua Zeng, Gui Jun Li, Zheng Hua Huang
Chapter 4: Steel
Abstract:This paper firstly analyzed the desulfurization mechanism of magnesium compound desulfurizer and compound desulfurizer. It is thought that...
428